Abstract: An innovative design of a magnetic coupler for shaft speed amplification is proposed and verified by experiments. The structure of the proposed magnetic coupler is similar to an infinite-stage gearbox. In addition, the mathematical model of flux density is derived to look into the equation of adjustable gear ratio and effect of speed amplification. Moreover, two sets of experiments, n...

The paper shows the successive steps of approximation of Picard unification for the solution of the non-isothermal fluid flow in thin layer including inertia forces and apparent viscosities described by the non-linear dependences. In this paper is presented a unified semi analytical method of solution of the asymmetrical, laminar, steady and unsteady, non-Newtonian lubrication problem flow betw...

An increasing penetration of renewable generation has led to reduced levels rotational inertia and damping in the power network. The consequences are higher vulnerability disturbances deterioration dynamic response system. To overcome these challenges, novel converter control schemes that provide virtual have been introduced, which raises question optimal distribution such devices throughout Th...

The origin of the ∆I=4 staggering effect which has recently been observed in several su-perdeformed bands is discussed. The Hamamoto and Mottelson model, which is based on a phenomenological parametrization of the hamiltonian as a quartic function of angular momentum , is analyzed. A stability of the description with respect to the C 4-symmetry breaking terms is studied. Recently, a puzzling ne...

True polar wander (TPW), a reorientation of the rotation axis relative to the solid body, is driven by mass redistribution on the surface or within the planet and is stabilized by two aspects of the planet’s viscoelastic response: the delayed viscous readjustment of the rotational bulge and the elastic stresses in the lithosphere. The latter, following Willemann (1984), is known as remnant bulg...

The rotational property of a quantum liquid at the vicinity of the lamda point Tλ is examined. In a liquid helium 4, shear viscosity shows a slight decrease just above Tλ. We suppose that under the strong influence of Bose statistics, the coherent many-body wave function grows to an intermediate size between a macroscopic and a microscopic size just above Tλ, and suppress the shear viscosity. W...